Hansen, A. K., and K. Mollegaard-Hansen. “An Improved Technique for the Decontamination of Barrier Units Contaminated With Bacillus Piliformis Strains of Rat Origin”. Scandinavian Journal of Laboratory Animal Science, vol. 17, no. 2, Dec. 1990, pp. 1-3, doi:10.23675/sjlas.v17i2.630.